Most weird thing has appeared in my laptop's shortcut tray. My Mozilla Firefox tray shortcut is named Mozilla Firefox (5) if you hold the mouse over it. I've tried to rename it to just Mozilla Firefox in the properties box under the general tab, but if I do that, a message pops up and asks me if I want to rename the pinned shortcut to Mozilla Firefox (6). I tried unpinning the shortcut, and pinned a new one, but the name stays the same. I've included a screenshot.